Oil-pump



Patented Aug. 2, I898.

F. C. SMITI'.

(No Model.)

I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I III II II IIIIIIIIIIIIIIIIIIIIIIIIIIIIIIII IIIIIIIIIIIIIIIHMWIIIIIIIIIIINIWIH I Iwan! clear, and exact description of the invention,`

, :UNITED STATES PATENT OFFICE.

` FRED oLiNToN sMITn, oF DELAV'AN, wrscoNsIN.

OIL-PUMP.

SPECIFICATION forming' 'part of Letters Patent No. 608,274, dated. August 2, 1898. I Applicationfilecl May 18, 1897. Serial No. 637,113. (No model.)

To a/ZZ whom it may concei'n;

Be it known that I, FRED CLINToN SMITH, a citizen of the United States, and a resident of Delavan, in the county of Walworth and State of Visconsimhave invented certain new and useful Irnprovements in Oil-Pumps; and I do hereby declare that the followingis a full,

which will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, which form apart of this specification.

vMy invention relates to oil-pumps of that class or description which are employed for filling lamps from loiltanks or receptacles and in which when the lamp is filled anysurplus oil supplied thereto willbe sucked back into the tank and overfiowing of thel lamp prevented.

The object of the present invention is, to provide an improved construction of such pumps which shall possess superior advantages with respect to efiiciency in operation.

The invention consists in the novel constructionyand combination of parts hereinafter fully described and claimed.

In the accompanying drawings, Figure 1 is a perspective View, partly broken away, of an oil-pump constructed in accordance with my invention. Fig. 2 isa longitudinal sectional view on the line Fig. 3. Fig. 3 is a horizontal section on the line 'y y, Fig. 2.

In the said drawings the reference-numeral 1 designates'the pump barrel or cylinder, having a partition 2 near its lower end. Located above said partition is a partition 4, having a central'opening 5, and between said partitions is a hinged or fiap Valve 6.

The numeral 7 designates the top of the pump-barrel, of a larger diameter than the latter, and seats upon the top of oiltank or receptacle. (Not shown.) This cover is provided with an opening for the plunger-rod 7 to the lower end of which is secured the plunger 8. Near the upper end of the pump-barrel is a partition 9, having a' central opening larger than the plunger-rod which passes therethrough, a'nd working onsaid rod is a valve 10, consisting of a leather disk located between said partition and the cover or top 7. Secured to the pump-barrel near the lower i end is a valve-chamber 12, having an opening 13 in its lower end, and located in'this chamber is a disk valve 14. Connected with said valve-chamber is a Vertical pipe 15, which communieates with the upper end of the Sec'ured to the outer side ofthe pump-barrel is a Vcurved plate 16, forming a Vertical chamber 16,-closed at the upper and lower ends.

There is a passage or opening 17 at the upper end'of this chamber, which establishes communication with the pump-barrel above the partition 9. Connected with'the lower end `of'said ,chamber is an upwardly-extending pipel 18, which passes through the top 7 and is curved downwardly, forming a nozzle 19. The numeral 20 designates a similar pipe provided with a nozzle 21. This pipe 20 is connected with the pump-barrel just above the partition 4.

The operation is as follows: The pump is linserted in the oil-tank (not shown) through an opening in the top, with the cover or top 7 resting on the top of the tank. The lamp to b'e filled is then placed on the tank, with the nozzles extending down through the fillingopening therein. The plunger is then re'ciprocated, and on the downstroke of the same the Valve 14 is opened and oil is drawn into the pump-barrel through pipe 15, the valve 10 closing the opening in the partition 9. Upon the upstroke of the plunger the valve 10 will rise and uncover the opening in partition 9,

i and the oil in the barrel will be forced through passage or opening 17 into the chamber 1G, and from thence out through pipe 18 and nozzle 19 into the lamp' When the oil in the lamp reaches the nozzles, the excess thereof will be sucked down through pipe 20 into the pump-barrel on the upstroke of the plunger, valve 6 closing the opening in partition 4. On the downstroke of the plunger the valve l6 will open and the oil sucked into the barrel through pipe 20 will be forced lout of the lower end of the barrel into the tank. By this'construction there will be no liability of the oil sucked back from the lamp being splashed against the top of the tank and es caping between said top and the top of the pump-barrel.

From the above it will be seen that there will be no possibility of the lamp 'overfiowin g,

as any excess of oil is sueked back into the tank as fast aS fed to the lamp.

IIaving thns fully described niy invention, What I claini is- In an oil-pump the combination with the pninp-barrel, the partitions in the lower end of said barrel forined With openings, the valve located between said partitions, the valvecasing seen red to said pninp-barrel having an opening in the lower end, the valve, the pipe connected with said easing" and communicating` with the upper end of the pnmp-barrel, the apertnred partition, the plnnger-rod, the plnnger, the top or cover and the inovable valve on the plnnger-rod, of the Curved plate 

